EP 3650706 A1 20200513 - COMPRESSOR STAGE WITH BLEED AIR TUBES
Title (en)
COMPRESSOR STAGE WITH BLEED AIR TUBES
Title (de)
VERDICHTERSTUFE MIT LUFTENTNAHMEROHREN
Title (fr)
ÉTAGE DE COMPRESSEUR AVEC TUBES DE PRÉLÈVEMENT D'AIR
Publication
Application
Priority
GB 201818269 A 20181109
Abstract (en)
A compressor stage comprising a pair of bladed discs spaced apart from one another having a plurality of bleed tubes located in the space between the bladed discs. Each bleed tube has an internal and an external surface extending radially from an inter-disc cavity at the radially innermost section of the tube to a rim of the bladed discs at radially outermost section of the tube. The bleed tubes are positioned between the bladed discs, such that the bleed tubes remove a portion of air passing through the compressor stage and direct it to an area within the inter-disc spacing. The geometric shape of the internal bore of each of the bleed tubes changes along its lengths. The cross-section of each of the bleed tubes may have a cross sectional area that changes from a substantially non-polygonal shape at the radially outermost end to a substantially polygonal shape at the radially innermost end.
IPC 8 full level
F04D 29/32 (2006.01); F01D 5/08 (2006.01); F04D 29/58 (2006.01); F04D 29/64 (2006.01)
CPC (source: EP US)
F01D 5/085 (2013.01 - EP); F01D 5/34 (2013.01 - EP); F02C 6/08 (2013.01 - US); F04D 29/321 (2013.01 - EP US); F04D 29/582 (2013.01 - EP); F04D 29/644 (2013.01 - EP); F01D 5/081 (2013.01 - EP); F04D 19/02 (2013.01 - US); F05D 2220/3216 (2013.01 - EP); F05D 2250/70 (2013.01 - EP)
Citation (search report)
- [XPA] EP 3543539 A1 20190925 - UNITED TECHNOLOGIES CORP [US]
- [XAI] US 2003101730 A1 20030605 - HEIN STEFAN [DE], et al
- [A] US 2017328283 A1 20171116 - WASLO DANIEL [US], et al
- [A] EP 2617941 A1 20130724 - MTU AERO ENGINES GMBH [DE]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3650706 A1 20200513; GB 201818269 D0 20181226; US 2020149470 A1 20200514
DOCDB simple family (application)
EP 19201705 A 20191007; GB 201818269 A 20181109; US 201916672592 A 20191104